US3881548A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-temperature circulating water system for a steam turbine
Assignee: Westinghouse Electric Corp
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Filing: 1971-07-14
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Granted: 1975-05-06
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Expires: 1991-07-14
Abstract
Abstract A condensing system utilizing a multi-stage cooling tower to provide multi-temperature circulating water for one or more condensers to permit greater heat transfer in the cooling tower and efficient condensation of exhaust steam from one or more turbines.
Inventors
- 👤 Robert J Budenholzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 00:29
CPC Classifications
F; F28; F28B; F28B1/00; F28B1/06; F01; F01K; F01K9/00; F01K9/003; F28B1/02; F28B9/00; F28B9/04; F28B9/06; Y; Y10; Y10S; Y10S165/00; Y10S165/184; Y10S261/00; Y10S261/11
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
140 words
A condensing system for condensing steam comprising a condenser having a first heat exchanger through which a circulating fluid flows and being disposed so as to be contacted by influent steam entering said condenser and a second heat exchanger through which a circulating fluid flows, a cooling tower having an upstream and a downstream heat exchange portion disposed to provide series air flow therethrough, said upstream heat exchange portion being contacted by influent air, said first heat exchanger being in fluid communication with said upstream heat exchange portion of the cooling tower and said second heat exchanger being in fluid communication with the downstream heat exchange portion of said cooling tower, whereby the influent steam entering the condenser comes in contact with the heat exchanger portion of the condenser having the coolest circulating fluid to provide efficient condensing without subcooling.
Claim 2
Dependent Claim
140 words
A condensing system for condensing steam comprising a condenser having a first heat exchanger through which a circulating fluid flows and being disposed so as to be contacted by influent steam entering said condenser and a second heat exchanger through which a circulating fluid flows, a cooling tower having an upstream and a downstream heat exchange portion disposed to provide series air flow therethrough, said upstream heat exchange portion being contacted by influent air, said first heat exchanger being in fluid communication with said upstream heat exchange portion of the cooling tower and said second heat exchanger being in fluid communication with the downstream heat exchange portion of said cooling tower, whereby the influent steam entering the condenser comes in contact with the heat exchanger portion of the condenser having the coolest circulating fluid to provide efficient condensing without subcooling.
Claim 3
Dependent Claim
29 words
The condensing system as set forth in claim 1, wherein the upstream and downstream heat exchange portion of the cooling tower form separate stages of a wet cooling tower.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-05 | 1978-11-04 | 1979-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-05 | 1982-11-04 | 1983-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-05 | 1986-11-04 | 1987-05-06 | $7700.00 | Window Closed / Lapsed |